Improving the Performance of Sunspaces Using Smart Nano-Coated Glazed System: a Novel Approach
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In a glazing system, chromogenic-glazed systems with nanocoating properties can regulate the throughput of radiant energy per thermal and visual comfort and energy efficiency requirements. This study has aimed to improve the performance of sunspaces by investigating the effectiveness of smart nanocoated glazed system in order to prevent unwanted solar heat gains and heat losses during summer and winter, respectively. Mixed research methods have been been used by first analyzing previous studies in order to determine the base case characteristics and variables and then a computer simulation has been performed using "Design Builder". The thermal zones have been simulated in two parts. The reviving sunspace using the chromogenic glazed system and best-fit components within the climatic conditions of the city of Irbid, Jordan, have improved the sunspace performance with an energy reduction of 397.91 kWh (41.64 %) compared to the base case in Part One and energy reduction of 2495.85 kWh (43.36 %) compared to the base case in Part Two. In Part One, two thermal zones, i.e., the sunspace and the attached room, have been simulated, where the following five variables have been investigated: sunspace width, sunspace tilt angle, common wall material, glazed system, and ratio for an area of clear glass to tint glass. The best annual fit components have been 1.0 m in width, vertical glazed angle, brick common wall material, and electrochromic glazed system with seasonal control strategy (always off) in the clear state during winter and (always on) in tint state during summer. In Part Two, the space under investigation has been treated as one thermal zone with its fully glazed southern façade, and the glazed system has been conducted as the main variable.
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